Error message when launching Apex Interactive Debugger: No username provided and no default username found in project config or state

[sf-blilley]

Summary

The last version of the Apex Interactive debugger that works for me is 64.11.1. At some point after that, it debugger started throwing the error:
Error: No username provided and no default username found in project config or state.

Downgrading to 64.11.1 solved my problem.
Note: Debugging was working well for me until the debugger was upgraded. I am working with scratch orgs on a 258 instance .

Steps To Reproduce:

1. Ensure you are on a version of the Apex Interactive Debugger higher than 64.11.1. I confirmed the issue exists in 64.13.1.
2. Ensure your user has the "Debug Apex" permission, licenses configured in the dev hub, active scratch org, etc.
3. Attempt to start an interactive debugging session from VS Code. You will receive the error above.
4. Uninstall the Apex Interactive Debugger extension and install version 64.11.1 from here.
5. Attempt to start an interactive debug session again. It will work.

Expected result

Debugger will launch

Actual result

Debugger throws an error

Additional information

Feel free to attach a screenshot.

Salesforce Extension Version in VS Code: 64.13.1

Salesforce CLI Version: @salesforce/cli/2.106.6 darwin-arm64 node-v22.19.0

OS and version: Sequoia 15.7

VS Code version: 1.104.1

Most recent version of the extensions where this was working: 64.11.1

[svc-idee-bot]

Thank you for filing this issue. We appreciate your feedback and will review the issue as soon as possible. Remember, however, that GitHub isn't a mechanism for receiving support under any agreement or SLA. If you require immediate assistance, contact Salesforce Customer Support.

[svc-idee-bot]

Hello @sf-blilley 👋 Have you tried updating to the latest version of the Salesforce Extension Pack?

Latest: 64.14.0

We suggest you to update to the latest version of the Salesforce Extension Pack in the VSCode Extensions view and confirm that you're still seeing your issue.

[svc-idee-bot]

Hello @sf-blilley 👋 It looks like you didn't provide all the required basic info in your issue.

If you haven't already, please provide the following info:
Salesforce Extension Version in VS Code:
Salesforce CLI Version:
OS and version:
VS Code version:
Most recent version of the extensions where this was working:

Here's an example of a set of required info that will pass the validation:
Salesforce Extension Version in VS Code: 60.13.0
Salesforce CLI Version: @salesforce/cli/2.42.6 darwin-arm64 node-v18.18.2
OS and version: MacOS Sonoma 14.5
VS Code version: 1.89.1
Most recent version of the extensions where this was working: 60.11.0

A few more things to check:

• Make sure you've provided detailed steps to reproduce your issue, as well as all error messages that you see.
  • A repository that clearly demonstrates the bug is ideal.
  • Error messages can be found in the Problems Tab, Output Tab, and from running Developer: Toggle Developer Tools in the command palette.
• Make sure you've installed the latest version of the Salesforce Extension Pack for VSCode. (docs)
• Search GitHub for existing related issues.

Thank you!

[sf-blilley]

Providing this information again:

Salesforce Extension Version in VS Code: 64.13.1
Salesforce CLI Version: @salesforce/cli/2.106.6 darwin-arm64 node-v22.19.0
OS and version: MacOS Sequoia 15.7
VS Code version: 1.104.1
Most recent version of the extensions where this was working: 64.11.1

[sf-blilley]

Note this same error exists in version 64.14.0 as well

[amurashincertinia]

I'm getting the same error. Everything is most up to date:

Salesforce Extension Version in VS Code: 64.17.2
Salesforce CLI Version: @salesforce/cli/2.108.6 darwin-arm64 node-v22.12.0
OS and version: macOS Tahoe 26.0.1
VS Code version: 1.105.0

Can't remember the last time it worked for me as I'm not using it very often, but I can confirm that version 64.11.1 is working just fine.

[git2gus]

This issue has been linked to a new work item: W-20111990

[peternhale]

@sf-blilley From vscode session for the failure case, could you provide the results if command sf config list and then sf config list -g. Also sf alias list. Also the alias/username in the default target org displayed in the status bar. Please redact any info you do not want to share. When redacting, please provide values for username that are the same across the results of the commands. Just want to make sure everything is lined up properly.